Invasive Species

What is an INVASIVE SPECIES?

• a plant or animal that does harm in its non-native environment

• a plant that lives in the bottom of the ocean

• a plant or animal that lives in its native area

• a plant or animal that doesn't eat anything

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How do MOST invasive species get to new areas where they don't naturally belong?

• humans take them accidentally or on purpose

• they ride on the back of sea turtles from one country to another

• they get blown by the wind to a new location

• they buy a bus ticket and travel there themselves

How do zebra mussels cause harm?

• they eat up all the fish in the lake

• they don't cause harm

• they can clog up pipes and mess up the outside of ships

• they poison the fish

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If a new, NON-NATIVE species that eats rabbits was introduced into this food chain, what would probably happen?

• the population of rabbits would increase

• the population of eagles would decrease

• the population of eagles would increase

• there would be less sunlight

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Which statement about invasive species is true?

• they can help the food web get better

• lots of animals eat them

• they get killed off quickly

• they reproduce quickly

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The "ballast" of a ship holds water. Water is TAKEN IN from the ocean and DRAINED OUT into the ocean as the ship travels. What could be a problem with this?

• smaller fish or other organisms could accidently get moved from its home to somewhere it doesn't belong

• nothing is a problem with it

• it could make the water too hot

• it could cause thunderstorms

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Which of these is a native species in the desert?

• a cow

• a monkey

• an oak tree

• a cactus

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What is something that is common to most invasive species?

• they don't live long

• they can't have babies in the new area

• they can't eat anything in the new area

• they don't have many predators in their new area

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Choose the TWO (2) statements that are correct.

• DECREASE means to be more of something

• INCREASE means to be more of something

• DECREASE means to be less of something

• INCREASE means to be less of something

What is a NON-NATIVE species?

• a plant or animal that is in its right place

• a plant or animal that has been moved to a new place where it doesn't belong

• a kind of plant that no animals eat

• a kind of plant or animal that doesn't live anywhere

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